Self-ordering is increasingly common, and effective. One of my favorite restaurants is bustling with positive energy from its front-of-house staff every time I dine there. I’ve noticed one major reason why: They never take an order. Waiters run around offering complimentary hot tea and delivering food. Immediately after sitting down, I can see a QR code displayed on a small stand. With it, I’m able to order at my leisure and can see the total add up in real time instead of getting sticker shock ...